Marc I seen your comment in the following post http://www.edugeek.net/forums/av-mul...ower-down.html we are now having the same trouble as mentioned and they were fitted in 2009 as part of an IWB install in here too. Is there a thermal switch in them like the PLC-XE40. Teacher is lost without it. I have the following: Serial Number 68Z22135 Model PLC-XW57 Any help would be great Cheers Cathal
